Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
This titanium tube, primarily utilized in industrial sectors, strikes an impeccable balance between moderate strength and ductility. Renowned for its superb corrosion resistance in both highly oxidizing and mildly reducing environments (including chlorides), it is a cornerstone in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite and fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly receptive to cold forming employing standard methodologies. It is easily machinable, though it necessitates the maintenance of sharp tools and abundant coolant. Similar to machining austenitic stainless steels, it requires deep, continuous cuts with slow feeds and speeds for optimal results.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes, available in an array of sizes to meet diverse requirements.
Weight Reduction
With its low density and high strength-to-weight ratio, CP 2 grade titanium tubes are ideal for applications demanding weight reduction without compromising strength. They boast good ductility, can be cold formed, and are weldable using conventional TIG and MIG techniques, provided inert gas shielding is applied to prevent weld zone embrittlement.
Crystal Structure
At ambient temperature, ASTM B338 Grade 2 titanium exhibits an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Around 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature can shift based on impurities or alloying elements, which can further divide the equilibrium transformation into alpha and beta zones. In Grade 2 titanium, the typical alpha transformation occurs at 890°C (1635°F) and the beta transformation at 913°C (1675°F).
Grade 2 Titanium Seamless Pipe Manufacturing Process
At Daxun, ASTM B338 Grade 2 titanium seamless tubes are crafted from hollow blanks via hot extrusion or oblique rolling and piercing, followed by multiple cold rolling processes. These tubes maintain continuous perimeters throughout manufacturing, encompassing: sponge titanium vacuum arc melting, ingot blanking to hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling + piercing, degreasing, drying, cutting, online annealing, straightening, pickling, multiple cold rolling, degreasing, drying, vacuum annealing, straightening, cutting, pickling, final inspection, marking (DAXUN), and packaging.
Grade 2 Titanium Welded Pipe Manufacturing Process
Daxun's production of ASTM B338 Grade 2 titanium welded pipes involves annealed flat-rolled steel plate or strip and automatic arc welding (TIG). Key processes include: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, eddy current testing, caliper, marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Welded pipes undergo at least one stress relief heat treatment post-forming and welding, ensuring structural integrity and performance.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034) This highly sought-after titanium tube is a cornerstone for industrial applications, providing an exceptional balance of moderate strength and impressive ductility. Its stellar corrosion resistance triumphs in both highly oxidizing and mildly reducing environments, inclusive of chlorides. Ideal for chemical and offshore industries, as well as aircraft manufacturing, it excels where strength and ease of forming are paramount. Extensively utilized in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes, it sets the standard for versatility and reliability.
Fabrication
Titanium Grade 2 is exceptionally responsive to cold forming using standard methodologies. It is readily machinable; however, attention to tool sharpness and liberal coolant usage is essential. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds are recommended.
Stock Availability
Daxun Alloys maintains a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet diverse requirements.
Weight Reduction
CP 2 grade titanium tubes boast low density and a remarkable strength-to-weight ratio, making them perfect for applications demanding weight reduction without compromising strength. They are easily cold-formable, exhibit excellent ductility, and can be welded using conventional TIG and MIG processes, provided inert gas shielding is used to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube exhibits an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature can fluctuate based on impurities or alloying additions. Alloying elements segment the equilibrium transformation temperature into two zones: the alpha transformation zone, below which the alloy is fully alpha, and the beta transformation zone, above which it is entirely beta. Between these temperatures, both alpha and beta forms coexist. For Grade 2 titanium, these temperatures are typically 890°C (1635°F) and 913°C (1675°F), respectively.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are meticulously crafted from hollow blanks via hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. Ensuring continuous perimeters at all manufacturing phases, the process encompasses sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling, and piercing. Subsequent steps include degreasing, drying, cutting, online annealing, straightening, pickling, multiple cold rolling, degreasing, drying, vacuum annealing, straightening, cutting, pickling, final inspection, marking (DAXUN), and packaging.
Grade 2 Titanium Welded Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium welded pipe is crafted from annealed flat-rolled steel plate or strip using the automatic arc welding (TIG) process. Key production stages encompass: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Welded pipes undergo stress relief heat treatment post-forming and welding. Daxun ensures no filler materials are utilized during welding.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the pinnacle of titanium alloys. This premier duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer, offering a formidable high-strength solution operable at temperatures as low as 800°F (427°C). Renowned for its versatile applications, ATI Ti-6Al-4V, Grade 5 alloy excels in processes such as annealing, solution treating, and aging. It is the alloy of choice for compressor blades, disks, and rings in jet engines; critical fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; vital fasteners, and superior strength-to-weight ratio forgings.
Crafting this alloy begins with the precise melting techniques of vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by remelting through one or two sophisticated vacuum arc steps.
Specifications
• ASTM B338 - Standard Heat Treatable Titanium Tube
• AMS 4928 - Forgings and Forging Stock (Annealed)
• AMS 4965 - Forgings (Solution Treated and Aged)
• AMS 4967 - Forgings (Annealed, Heat Treatable)
Physical PropertiesThe melting range for Ti-6Al-4V Titanium Tube is an impressive 2,800-3,000°F (1,538 - 1,649°C), showcasing its resilience and versatility in various applications.
With a density of 0.160 lb/in³ (4.47 g/cm³), it provides a lightweight yet robust solution for demanding engineering needs.
The Beta Transus Temperature of this alloy is 1830°F (± 25°); 999°C (± 14°), reflecting its high-temperature endurance.
Heat Treatment When high hardness, tensile strength, and fatigue strength are required, the alloy is annealed at 1,700-1,900°F (927 - 1,038°C).
The DAXUN 6-4 Grade 5 Titanium Tube offers diverse heat treatment methods to suit various industrial requirements.
1. Annealing: Achieved at 1,275 -1,400°F (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: Conducted at 1,000 -1,200°F (538 - 649°C) for 1 to 8 hours, followed by air or furnace cooling.
3. Solution Heat Treating: Performed at 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by a water quench.
4. Aging: Executed at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties To achieve optimum properties, small cross-sections with rapid quenching are ideal in the solution-treated and aged condition. Larger cross-sections or delayed quenching may lead to properties that are less than optimal.
HardnessIn the annealed condition, the typical hardness ranges from Rockwell C 30-34, and in the solution and aged condition, it ranges from approximately Rockwell C 35-39.
Forgeability/Formability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is meticulously forged at 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C). A reduction of at least 35% is recommended for achieving the best results.
Though DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is challenging to form at room temperature even when annealed, severe forming operations like bending or stretching can be executed on the annealed material at temperatures up to 1,200°F (649°C) without altering its mechanical properties. Additionally, creep forming is an effective method for hot sizing or forming at temperatures of 1,000 to 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is exceptionally machinable using techniques designed for austenitic stainless steels. Optimize performance with slow speeds, high feeds, robust tool rigidity, and liberal use of non-chlorinated cutting fluids to ensure precision and longevity.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube excels in weldability, whether in annealed, solution, or partially aged conditions. The welding process remains effective and seamless with the right techniques.
accomplished during post-weld heat treatment. It is crucial to prevent contamination from oxygen, nitrogen, and hydrogen to maintain integrity. Fusion welding can be conducted in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and adjacent hot zones. Additionally, spot welding, seam welding, and flash welding can be executed without a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube must be handled with care to avoid hydrogen contamination from improper pickling and the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can diminish ductility, notch sensitivity, and formability, thus impacting overall performance.
